1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1987, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 * Copyright (c) 2002 Networks Associates Technology, Inc.
7 * All rights reserved.
8 *
9 * Portions of this software were developed for the FreeBSD Project by
10 * ThinkSec AS and NAI Labs, the Security Research Division of Network
11 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
12 * ("CBOSS"), as part of the DARPA CHATS research program.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 */
38
39 #include <sys/types.h>
40 #include <sys/stat.h>
41
42 #include <err.h>
43 #include <pwd.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <unistd.h>
48
49 #include <libutil.h> /* must be after pwd.h */
50
51 static void usage(void);
52
53 int
main(int argc,char * argv[])54 main(int argc, char *argv[])
55 {
56 const char *passwd_dir = NULL;
57 int ch, pfd, tfd;
58 char *line;
59 size_t len;
60
61 while ((ch = getopt(argc, argv, "d:")) != -1)
62 switch (ch) {
63 case 'd':
64 passwd_dir = optarg;
65 break;
66 case '?':
67 default:
68 usage();
69 }
70
71 argc -= optind;
72 argv += optind;
73
74 if (argc != 0)
75 usage();
76
77 if (pw_init(passwd_dir, NULL) == -1)
78 err(1, "pw_init()");
79 if ((pfd = pw_lock()) == -1) {
80 pw_fini();
81 err(1, "pw_lock()");
82 }
83 if ((tfd = pw_tmp(pfd)) == -1) {
84 pw_fini();
85 err(1, "pw_tmp()");
86 }
87 (void)close(tfd);
88 /* Force umask for partial writes made in the edit phase */
89 (void)umask(077);
90
91 for (;;) {
92 switch (pw_edit(0)) {
93 case -1:
94 pw_fini();
95 err(1, "pw_edit()");
96 case 0:
97 pw_fini();
98 errx(0, "no changes made");
99 default:
100 break;
101 }
102 if (pw_mkdb(NULL) == 0) {
103 pw_fini();
104 errx(0, "password list updated");
105 }
106 printf("re-edit the password file? ");
107 fflush(stdout);
108 if ((line = fgetln(stdin, &len)) == NULL) {
109 pw_fini();
110 err(1, "fgetln()");
111 }
112 if (len > 0 && (*line == 'N' || *line == 'n'))
113 break;
114 }
115 pw_fini();
116 exit(0);
117 }
118
119 static void
usage(void)120 usage(void)
121 {
122
123 (void)fprintf(stderr, "usage: vipw [-d directory]\n");
124 exit(1);
125 }
126